突加载荷法在模拟爆破中的应用  

Application of sudden applied load method in blast simulation

作　　者：肖福坤[1] 

机构地区：[1]黑龙江科技学院资源与环境工程学院,黑龙江哈尔滨150027

出　　处：《辽宁工程技术大学学报（自然科学版）》2006年第4期543-545,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(50474018);中国博士后科学研究基金资助项目(2001-14-30)

摘　　要：应用突加载荷法来模拟爆破振动响应,探讨利用采集到的硐室表面的振动速度或位移等物理量这些测试结果来反演岩体内部的应力场。模拟中采用位移等效原则来确定突加载荷的大小、作用时间和作用范围,通过岩体力学有限元分析软件来计算,以进行岩体内的动态应力场的分析和巷道围岩稳定性的研究,确定岩体临界振动速度时临界爆破药量。将此方法应用工程实际当中,取得了显著的效果。Sudden applied method is used to simulate the blast shake. This can utilize physical parameters that were collected on the surface of tunnel such as shake speed and displacement to inverse analysis of the stress field of inner rock mass, During the simulation, we adopt equivalent displacement method to confirm the dimension of sudden applied load, actuation duration and range of action. Through the rock mechanics software we can calculate and process the analysis of the dynamic stress field and the stability of the tunnel wall rock. Based on this we can define the max explosive content when the shake speed of rock mass is critical. Used this method to the actual engineering, notable effect is obtained.

关 键 词：突加载荷法 爆破 应力场 围岩稳定性 

分 类 号：TD235.4[矿业工程—矿井建设]